package servlet;

import pojo.User;
import service.UserService;
import service.impl.UserServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;


// 注解
@WebServlet(urlPatterns = "/user?action")
public class UserServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        UserService userService = new UserServiceImpl();
        req.setCharacterEncoding("utf-8");
        String action = req.getParameter("action");
        if ("list".equals(action)){
            List<User> users = userService.findAll();
            req.setAttribute("users", users);
            req.getRequestDispatcher("/list.jsp").forward(req, resp);

        } else if ("add".equals(action)) {
            String name = req.getParameter("name");
            String pass = req.getParameter("pass");
            int result = userService.addUser(new User(name, pass));
            if (result > 0) {
                resp.sendRedirect("user?action");
            }

        }
        else if ("delete".equals(action)) {
            String sid = req.getParameter("id");
            Integer id = Integer.parseInt(sid);
            //根据id查
            int result= userService.DeleteUserById(id);
            //将对象存储
            //if判断

            // 重定向
            resp.sendRedirect("user");
        }
        else if ("update".equals(action)) {
            String sid = req.getParameter("id");
            Integer id = Integer.parseInt(sid);
            String name = req.getParameter("name");
            String pass = req.getParameter("pass");


            int result = userService.updateUser(new User(name,pass));
        }




    }
}
